2006年11月1日 · Stormwater Management Report Example Format I. Table of Contents with page numbers 1. Stormwater Management Summary II. ... 10, 25, 50 and 100 Year Frequencies 3. Post-Development Hydrograph Calculations (for each Drainage Area) A. Design Point 1 (Drainage Area 1) 1. Weighted CN Calculations 2. Tc Calculations 3. Hydrographs – 1, 2, 10, …